<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
					var double = function(x)
					{
						return 2*x;
					}
					alert(double(3));
		            (function(x,y){alert(x+y);})
					(2,3);
		</script>
	</head>
	<body>
	</body>
</html>